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JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
卷 25, 期 12, 页码 1949-1954出版社
OPTICAL SOC AMER
DOI: 10.1364/JOSAB.25.001949
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A design method for hollow optical fibers is shown that has a dielectric cover film loaded on the inner metal coating to obtain flexible fiberoptics transmitting a wide wavelength range in THz region with low loss. Spectral losses of fibers that are fabricated by two different methods are measured by using a broadband THz source. The loss of a fiber with an inner diameter of 3 mm was 1.3 dB/m at the wavelength of 200 mu m, and the losses were lower than 3 dB in the wavelength region from 150 mu m to > 250 mu m. Because these fibers are flexible, robust, and highly efficient in a wide wavelength range, they are useful in remote THz spectroscopy. (C) 2008 Optical Society of America
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